ArticleJournal of cellular and molecular medicine2020
MeCP2-421-mediated RPE epithelial-mesenchymal transition and its relevance to the pathogenesis of proliferative vitreoretinopathy.
Article in Journal of cellular and molecular medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 8 citations in OpenAlex.
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- Proteopathy Linked to Exon-Skipping Isoform of RGR-Opsin Contributes to the Pathogenesis of Age-Related Macular Degeneration.Investigative ophthalmology & visual science · 2023Article
- The essential role of N6-methyladenosine RNA methylation in complex eye diseases.Genes & diseases · 2023Review
- Article
- MeCP2-421-mediated RPE epithelial-mesenchymal transition and its relevance to the pathogenesis of proliferative vitreoretinopathy.Journal of cellular and molecular medicine · 2020Article
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Proliferative vitreoretinopathy (PVR) is a blinding eye disease. Epithelial-mesenchymal transition (EMT) of RPE cells plays an important role in the pathogenesis of PVR. In the current study, we sought to investigate the role of the methyl-CpG-binding protein 2 (MeCP2), especially P-MeCP2-421 in the pathogenesis of PVR. The expressions of P-MeCP2-421, P-MeCP2-80, PPAR-γ and the double labelling of P-MeCP2-421 with α-SMA, cytokeratin, TGF-β and PPAR-γ in human PVR membranes were analysed by immunohistochemistry. The effect of knocking down MeCP2 using siRNA on the expressions of α-SMA, phospho-Smad2/3, collagen I, fibronectin and PPAR-γ; the expression of α-SMA stimulated by recombinant MeCP2 in ARPE-19; and the effect of TGF-β and 5-AZA treatment on PPAR-γ expression were analysed by Western blot. Chromatin immunoprecipitation was used to determine the binding of MeCP2 to TGF-β. Our results showed that P-MeCP2-421 was highly expressed in PVR membranes and was double labelled with α-SMA, cytokeratin and TGF-β, knocking down MeCP2 inhibited the activation of Smad2/3 and the expression of collagen I and fibronectin induced by TGF-β. TGF-β inhibited the expression of PPAR-γ, silence of MeCP2 by siRNA or using MeCP2 inhibitor (5-AZA) increased the expression of PPAR-γ. α-SMA was up-regulated by the treatment of recombinant MeCP2. Importantly, we found that MeCP2 bound to TGF-β as demonstrated by Chip assay. The results suggest that MeCP2 especially P-MeCP2-421 may play a significant role in the pathogenesis of PVR and targeting MeCP2 may be a potential therapeutic approach for the treatment of PVR.
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